Home / 3,557.30-4,908.84-1,985.36

Finding the Fourth Proportional to 3,557.30, 4,908.84 and 1,985.36

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Solution

The fourth proportional to 3,557.30, 4,908.84 and 1,985.36 is: 2,739.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,557.30 : 4,908.84 = 1,985.36 : x
  2. Step 2: Convert to fraction form
    3,557.30/4,908.84 = 1,985.36/x
  3. Step 3: Cross multiply
    3,557.30x = 4,908.84 × 1,985.36
  4. Step 4: Simplify right side
    3,557.30x = 9,745,814.58
  5. Step 5: Solve for x
    x = 9,745,814.58/3,557.30
  6. Step 6: Final answer
    x = 2,739.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.